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      03-30-2018, 12:15 PM   #1
MPower7
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5mm Spacers for track

What are your guys opinion's on using 5mm spacers in front due to a 275 square set up and KW clubsports.

I've heard that is it not wise to use a spacer that is not hub centric. Any input on this?

Would it also benefit to use 5mm spacers in back to even the stance?

Thanks,
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      03-30-2018, 12:37 PM   #2
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Quote:
Originally Posted by MPower7 View Post
What are your guys opinion's on using 5mm spacers in front due to a 275 square set up and KW clubsports.

I've heard that is it not wise to use a spacer that is not hub centric. Any input on this?

Would it also benefit to use 5mm spacers in back to even the stance?

Thanks,
If you're tracking it do not run a non-hub centric spacer, especially a 5mm; you run the serious risk of bending or breaking your wheel studs
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      03-30-2018, 12:58 PM   #3
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A 5mm spacer still leaves plenty of room on the 'lip' for the wheel to attach.

I run 3 and 5mm spacers frequently. If I need something larger than 5 I'll go to a 10mm which is hubcentric.

7mm, which I also have, doesn't give the wheel enough space to hold on to the lip
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      03-30-2018, 01:09 PM   #4
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Nothing wrong with a properly installed spacer.

The hub is to center the wheel into position, the studs/lugs fasten the wheel.
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      03-30-2018, 01:13 PM   #5
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I've been running the 5mm spacer with that combo you listed for many many track days. No issues. You are fine.
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      03-30-2018, 02:27 PM   #6
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Any input on the spacers in back? Or no point?

Thank you!
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      03-30-2018, 03:40 PM   #7
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Quote:
Originally Posted by MPower7 View Post
What are your guys opinion's on using 5mm spacers in front due to a 275 square set up and KW clubsports.

I've heard that is it not wise to use a spacer that is not hub centric. Any input on this?

Would it also benefit to use 5mm spacers in back to even the stance?

Thanks,
5 mm spacers typically allow your wheel to remain hub-centric because enough of the hub remains protruding to make contact with the wheel hub. However, there are some wheels that have a more extreme taper at the hub and need more hub protrusion to make contact. An example is the BBS E88. A 5mm spacer is not hub-centric with the E88 for this reason. Therefore I would only use a 3mm spacer or 10mm+ spacer that has its own hub centric protrusion with the E88. You can test with your wheels. Install the spacer and confirm that there is wheel hub contact.


Putting spacers on the rear of the car is up to you. Go for it if you want to. The other thing I recommend is that you get wheel studs so that you have the flexibility to use different size spacers without having to keep track of a bunch of different extended lug bolts.
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      03-30-2018, 03:44 PM   #8
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Quote:
Originally Posted by MPower7 View Post
Any input on the spacers in back? Or no point?

Thank you!
It's up to you. I personally prefer a flusher look even at the track.

If you're going to get studs --highly recommended-- I suggest the Bimmerworld Race Studs. There's a 10 page thread about studs somewhere and it was clearly the consensus opinion.
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      03-30-2018, 04:56 PM   #9
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Would new bolts be required that are 5mm longer or is that not necessary?

Appreciate the help!
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      03-30-2018, 04:59 PM   #10
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Quote:
Originally Posted by MPower7 View Post
Would new bolts be required that are 5mm longer or is that not necessary?

Appreciate the help!
Extended fasteners are required. They come included with the Macht Schnell spacer kits
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      02-01-2019, 02:16 PM   #11
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What brand are you guys using?
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      03-06-2020, 05:20 PM   #12
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Lot's of mods since I last started this thread. I've upgraded to KW CS, PFC Z54 front brakes, APEX 12mm studs 75mm, APEX SM-10 18x10 w/ nitto nt01 275 square. Camber will be around -3.3 to 3.5.

When I place the wheel on the hub with the front 5mm spacers on. The wheel will not stay on the hub and slide off onto the studs. It looks like the rotor hat for the PFC brakes may be thicker than stock, as well as the chamfered wheel is really reducing the hub availability.

Not the most confidence inspiring for the track. Would upgrading to a hubcentric 10mm be a safe replacement? If anything for piece of mind.
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      03-06-2020, 08:04 PM   #13
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Quote:
Originally Posted by MPower7 View Post
Lot's of mods since I last started this thread. I've upgraded to KW CS, PFC Z54 front brakes, APEX 12mm studs 75mm, APEX SM-10 18x10 w/ nitto nt01 275 square. Camber will be around -3.3 to 3.5.

When I place the wheel on the hub with the front 5mm spacers on. The wheel will not stay on the hub and slide off onto the studs. It looks like the rotor hat for the PFC brakes may be thicker than stock, as well as the chamfered wheel is really reducing the hub availability.

Not the most confidence inspiring for the track. Would upgrading to a hubcentric 10mm be a safe replacement? If anything for piece of mind.
Do a 10mm. It will fit no problem with that much camber and those wheel specs. Alternatively you can install a 140mm spring length on your coilovers to gain more inner space and eliminate need for spacer. However et25 is pretty conservative with your camber
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